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प्रश्न
Give three applications of electrolysis.
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उत्तर
Three applications of electrolysis are :
- Electroplating with metals
- Electrorefining of metals
- Extraction of metals
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संबंधित प्रश्न
Identify the substance underlined, in the following case
The electrolyte used for electroplating an article with silver.
Copy and complete the following table:
| Anode | Electrolyte | |
| Purification of copper |
Out of Cu and Ag, which is more active?
Give reason for the following:
The blue colour of aqueous copper sulphate fades when it is electrolysed using platinum electrodes.
Give reason for the following:
For electroplating with silver, silver nitrate is not used as an electrolyte.
The following question relate to the electroplating of an article with silver.
Name the electrode formed by the article which is to be plated.
Element X is a metal with valency 2. Element Y is a non-metal with valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is diatomic gas, write the equation for the direct combination of X and Y to form a compound.
(c) Write two applications of electrolysis in which anode diminish in mass.
(d) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the _____ and the Y at the ________of the electrolytic cell. (Provide the missing words).
Mr Ramu wants electrolyte his key chain with nickel to prevent rusting. For this electroplating
(i) Name the electrolyte
(ii) Name the cathode
(iii) Name the anode
(iv) Give the reaction at the cathode
(v) Give the reaction at the anode
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
Which solution is preferred as electrolyte, CuSO4 or FeSO4?
